Consin



W. A. VAN BRUNT DRIVING MECHANISM FOR SEEDING MACHINES Original EiledJune lO, l9l8 Z 4 miifiwix L flanged-L75.

Patented Dec. 2, 1924.

UNITED STATES GONSIN.

PATENT OFFICE.

DRIVING MECHANISM FOR SEERING I-"'CHTNES.

Original application filed June 10, 1918, Serial No. 238,109.

To (Z a ll whom it may concern.

lie it known that I, lVILLARn A. VAN NT. citizen of the United States,and a resident of Los Angeles. in the county of Los rlngeles. in theState of California in ly of Horicon lVisconsin), have incertain new anduseful Improvevented ments in Driving Mechanisms for Seeding achines ofwhich the following is a speciheat-ion. reference being had to theaccompanying; drawings.

lily invention relates to variable speed riving mechanisms for seedingmachines of the type adapted for planting wheat. rye barley. oats andthe like. In the operation of meehanisns of this type it is importantthat whatever speed be employed the seed dispensing parts be drivensmoothly and evenly without vibration or lost motion in order that theflow of seed to the soil shall be even and uniform. In this way an evenspacing}; of the seed'in the soil will be attained. assuring the maximumcrop return. To this end it s the object of my invention to provide anew and improved form and arrangement parts by which the maximum ofettcicncy will be secured in the delivery of the seed to the soil. andby which astrong and durable construction will be attained.

This application is filed as a division of my application Serial No.239,109, for im provements in seeding machines filed June 10.1918.

The preferred means by which I have acco olished my objects areillustrated in the js and are hereinafter specifically de- 1 ed. Thatwhich I desire to cover by iis application is set forth in the claims.

1n the drawings Fig. 1 is a. transverse vertical section through oneside of a seeding machine. certain of the parts being broken away;

is a face view of the gear mounted upon the axle by which the drivingmechanism is driven, a part of the disc being broken a r-7a in orderbetter to show the construction;

Fig. 3 is a. cross-section taken on line 3+3 of Fig. 2;

Divided. and this application filed September Serial No. 408,211..

ig. l is an enlarged detail being a hori- Referring to the severalfigures of the drawings in which corresponding parts are indicated bythe same reference characters, 10 indicates one end portion of a deadaxle which is cminccted by means of a socket member 11 with a forwardlextending framebar 12. A live avle 13 is revolubly mounted in the socketmember 11 substantially in alinen'ient with the dead axle 10 the axlemember 13 having a driving sleeve 1 fixedly mounted upon its outer end.A wheel 15. only a fra mentary portion of which illustrated is iniedlymounted upon the driving sleeve 14; in any suitable manner. The drivingsleeve. 14 is journaled in a sleeve or boxing 16 which has suitable connection with the framework of the machine.

will be readily und rstood. A vertical approved 9e is supported abovethe 51X .e.

A driving plate 19 is mounted by means of a sleeve 20 upon the axlemember 15 the outer end of the sleeve 20 being enlarged to embrace theinner end of the driving sleeve 14:. The sleeve 20 is mounted so as tobe movable longitudinally of the axle member 18, and of the drivingsleeve 11 but so as to rotate therewith. Revolubly mounted upon theouter end of the sleeve 20 adjacent to the drivi g plate 19 is largegear 21 which is in the form of a disl: provided on its outer face withplurality of sets of concentric teeth 22. Upon its inner face, the gear21 is provided with ratchet teeth 23 which are adapted to be engaged bypawls 2-1 which are pivotally mounted in suitable pockets or recesses inthe periphery of the driving plate 19. Springs 25 serve to hold thepawls 2 1 normally projected beyond the periphery of the plate 19 so asto engage the ratchet teeth 23 of the gear. I have provided three of thepawls 24 for driving the gear 21, so positioned that when one of thepawls is in engagement with a ratchet tooth, the other two pawls standin intermediate positions between the teeth, thus making the pawls 24quick to respond to the forward movement of the plate 19 for giving acorresponding movement to the gear 21. At the same time the plate 19 isfree to move backwards with respect to the gear 21 without any tendencyto drive the gear, whereby the machine may be turned or backed without acorresponding backward movement of the gear 21.

Extending along the outer face of the gear 21 is a square shaft 26 whichis mounted at one end in a button bushing 26 which in turn has asuitable bearing in the i301; or sleeve 16. Slidably mounted upon theshaft 26 is a pinion 27 which is adapted to mesh with any one of theplurality of concentric series of teeth 22 of the gear 21. Means isprovided for moving the pinion 27 vertically along the shaft 26,comprising a yoke 28 and a bar 25) rising therefrom. The bar 29 isadapted to be held by the use of any suitable mechanism, not shown, inany adjusted position as may be desired for controlling the verticalposition of the pinion 27, the yoke 28 being in engagement with acircumferential groove in the said pinion, as is best shown in Fig. 5.An arm 30 extending forwardly from the yoke 28 engages a guide in theform of a channel bar 31 carried by the framebar 17 for holding the yoke28 in suitable position.

When it is desired to throw the gear 21 and pinion 27 out of operativeengagement, this can be accomplished by moving the gear 21 toward theright as viewed in F 1 along the axle member 13. For accomplishing thisresult I have provided a collar 32 which may be manipulated in anysuitable manner for effecting the desired result. lChe movement of thegear 21 toward the right as viewed in Fig. 1 is opposed by a coiledspring 33 mounted upon the axle member hetween the sleeve 20 and acollar 3 nounted on said axle member which spring ici the gear 21yieldingly in engagement with the pinion As will be readily understood,the ge= r 21 may be thrown out of operative position when the pinion 27is to oved to an adjusted position.

are provided an automatically acting safety device for preventing therotation of the pinion 2! in a reverse direction. This means comprises acollar 35 mounted upon the hub of the pinion 27 (see Fig. 5) so as tohave frictional engagement therewith. The collar 35 is provided with anarm 36 extending from one side thereof into the channel 3]. and a secondarm 37 extending to a point substantially opposite to the teeth of thepinion 27. The arm 36 is of a smaller width than the channel 31, wherebythe col-- lar 35 is permitted to have a slight rocking;

movement about the axis of the pinion 27. lVhen the pinion 27 is beingdriven in its normal forward direction, vhich is in counterclockwisedirection as viewed in Fig. 4-, the collar will stand at the limit ofits motion in counterclockwise direction as viewed in said figure withthe arm 36 in conwith the left hand flange of the channel 31 asillustrated in said figure. With the collar in this position the arm 37is held out of contact with the gear 21.. Nhen, however, the gear 2''?is given a very slight movement in a reverse direction, the arm 36 isquickly moves into contact with the opposite flange of the channel 31,serving to throw the arm 37 into engagement with the teeth of the 21 asto prevent reverse rotation of such gear. By this construction, the seeddelivering mechanism is protected against movement in reverse directioneven though the pawls should fail to function properly.

."is is best shown in Fig. l, the upper end of the shaft 26 is mountedin a socket in the lower end of a short siaft 38 which is jou 'naled ina bearing 39 carried by the framework. The socket in the shaft 38 in theconstruction shown is square in cross S rtion to suit the shape of theshaft 26, and i rounded in vertical section so as to form substantiallya universal joint with the haft 26. The shafts 26 and 38 thus contitutein effect a single shaft, the upper end portion of which may bedeflected laterally with. relation to the lower portion thereof. Theupper end of the shaft 38 1s therewith and to move longitudinallythereof, and is adjustably held in position by a latch device 43 of anysuitable means 0 A 4P i h either of which the pin- L 42 is adapted tomesh for driving the hen it is desired to adjust the ion of the pinionl2, the bolt 41 is !0ll$\l l@ l so that the bearing 40 may be movedtoward the left as viewed in Fig. to free the pinion from the gearteeth. X fter the desired change of position of the pinion .42 has beenby the use of the latjh4l3,thebolt 4 will be again tightened. any ablemechanism operated by the s ed delivery shaft -15 to dispense the seedLLOlil the hopper 18 may be provided and much the se rd dispensingmechanism no part of my present invention, it is believed to beunnecessary to describe the same herein. It will be understood of coursethat mechani m as above described is provided at be h ends of themachine, and con- F equently, hen the machine moves forward, 7 otion istra nitted the ground wheels to the gears i from them through i to theends of the 1 described, chanisms are and th seed L Li) v chattering orer ndin 'eeth those the pinion sh also cause erinng, tre nbling andvibrating areas 27 that roll against the areas 46 of i p k i 21, andbetween the bases of the eeth 4C are circumferential areas 48 paralwitltie axis of the pinion and extending l n of the tooth base as best shownFig. against which circumferential treat the areas of the teeth 22 roll.In

this manner a continuous rolling contact is provided between the gear 21and pinion 27 whereby the desired smooth even operation is effected.

it desired a flange or face &9 may be tor-med around the entireperiphery of the pinion 27 concentric with the areas 18, so that itoverlies and is adapted to have rolling engagement with the flat tacosoi": the row of teeth 22 next to the row being engaged by the teeth ofthe pinion 27. As is nest shown in Fig 3 the inner faces of the teeth 22are sloped outwardly at substantially 45 degrees with respect to theplane of the gear, as indicated at 50, and the outer faces of the teetht? are likewise given a pc or approximately 4-5 degrees as is indicateoat in Fig. 5. By reason of this formation the teeth are adapted to clearbest shown the at are OI the flat areas 4:6, which converge inwardly ortoward such areas forming concentrically disposed V- shaped recessesbetween consecutive teeth 22 of the same row which recesses conform tothe inclination of the inner and outer faces at the end portions of theteeth 47 of the pinion 27. These-recesses serve to center the teeth 22tend to ent acciden roper contact bewhereby a red small exunp' becmesworn due of the spring replacement of a new busha worn one, the bearingis ained in order.

m as my invention and deby Letters Patenh is, dr'ving mechanismcomprising a 1 the term of a disk having a plurality teem arranged inconientric rows, 7 being fiat at their outer ends and e teeth oi? thesame row being separated by areas, a pinion having radially extendteethitem to mesh with the teeth 0t 1 teeth oit said pinion being bycircuin'terential areas and having circuinil erential areas a "heirends, and recesses in said ar tending to prevent accidental radialnioiuinent of said pinion the end faces of the teeth of 1 gear and 1 onbeing arranged each to have rolling er the areas between the to of t 1eother.

2 fr driving mechanism comprising a gear in the torn: disk having aplurality of teeth arranged in concentric rows,

- th being fiat at their outer ends and the tcetgi of the seine rowbeing separated by areasi said gear having inclined sur fl faces at theinner and outer sides oi said aas, forming conce' trically disposed V-th same row, and a pinion having radially udinc: teeth adapted to meshwith the of said rows, the teeth of saic pinion separated bycircumferential areas circumferential areas at their ined inner andouter faces 4 orrn to the inclined surfaces cos wh reby said recessestend 13 shaneo reccsse, between consecutive teeth of accidenflil radialmovement of said p; 1011, the end faces of the teeth of said or andpinion being arranged each to have rolling engagement with the areasbetween the teeth of the other,

3. driving mechanism tor seeding macomprising a gear havi a plurality:13 01? teeth arrangezjl concentrically a second having operativeigeinent with one at said sets of teeth of 1 first-naine'l and rollingengagement with another of said sets ot tee-h.

4:. A driving Incch n1 tor seedng niacuincs comp ising a er in the formof a plate having plurality of sets of teeth ally and extendinglongitudinally of the axis about Which the gear rotates, and a secondgear having operative engagement with one of said sets of teeth of saidfirstnamed gear and rolling engagement with another of said sets ofteeth.

A dr' ing mechanism for seeding machines cohiitirising a gear having aplurality of sets of teeth arranged concentrically thereon, and secondgear having a set of radially-disposed teeth adapted operatively toengage one of the sets of teeth of said first-named gear, second gearhaving a Elli-100th face portion alongside of the teeth thereon adaptedto have rolling engagement with another of said sets of teeth on saidfirstaiamed gear.

6. A driving mechanism for seeding machines comprising a stationarybearing sleeve a traction driven rotary sleeve journale'l in said.stationary sleeve an axle member mounted in said rotary sleeve andnonrotatably connected therewith, a shaft arranged at an angle to saidaxle and having a bearing in one side of said stationary sleeve, anddriving connections between said axle and said shaft.

7. A driven mechanism for seeding machines comprising an axle,substantially alined shafts operatively connected together, variablespeed driving connections between said axle and one of said shafts,concentric bevel gears at the same side of the other shaft, and a bevelpinion mounted on the latter shaft and movable into operative engagementwith either of said bevel gears.

8. A driving mechanism for seeding machines comprising an axle, a shaft,variable speed driving connections between said axle and said shaft, aseed delivery shaft, concentric bevel gears carried, by the lattershaft, and a bevel pinion carried by said first-mentioned shaft andmovable into operative engagement with either of the bevel gears carriedby said seed delivery shaft.

9. A driving mechanism for seeding machines comprising an axle, a shaft,variable speed driving connections between said axle and said shaft, asecond shaft normally in substantial alinement with said first-mentionedshaft, a bevel pinion slidably mounted on said second shaft and adaptedto be rotated thereby, a bevel gear having a plurality of sets of teethconcentrically arranged, a shaft on which said bevel gear is mounted,and driving connections between said first-mentioned shafts adapted topermit lateral deflection of said second shaft, whereby said bevelpinion is adapted to be placed in mesh with any one of the sets of teethon said bevel gear.

10. A driving mechanism for seeding machines comprising an axle, ashaft, variable speed driving connections between said axle and saidshaft, a second shaft having a socket in one end adapted to have aworking fit upon the end of said first-named shaft so as to permit aslight variation in alinement of said two shafts while being adapted tocause said shafts to rotate in unison, adjustable means for holding saidsecond shaft in operative position, a bevel gear having a plurality ofsets of teeth concentrically arranged, a seed delivery shaft on. whichsaid bevel gear is mounted, and a bevel pinion slidably mounted on saidsecond shaft and adapted to be rotated thereby, said bevel pinion beingadapted to be placed in mesh with any one of the sets of teeth of saidbevel gear for varying the speed of said seed delivery shaftindependently of said first-named variable speed connections.

11. In a seeding machine, the combination of a stationary bearingsleeve, a driving sleeve rotatably mounted therein, an axle mounted insaid driving sleeve, a gear slidably mounted on said axle, a bushingrcvolublv mounted in a socket in one side of said bearing sleeve, ashaft mounted in said bushing and extending across the face of saidgear, a pinion slidably mounted on said shaft and meshing with saidgear. and a spring holding said gear yieldingly in mesh with saidpinion.

12. A seeding mechanism comprising a seed shaft, means for driving saidseed shaft, and a frictionally-mounted device adapted to be heldyieldingly in inoperative position while said driving means is drivingsaid seed shaft in its normal direction but adapted when the drivingmeans is rotated in the opposite direction to be moved by friction intooperative position for preventing reverse rotation of said seed shaft.

13. A seeding mechanism comprising a seed shaft, a rotary member fordriving said seed shaft, a plate frictionall -mounted on said rotarymember, and means adapted upon a slight rotary movement of said platewith said rotary member in a reverse direction to prevent furtherbackward movement of said rotary member.

14. A seeding mechanism comprising a seed shaft, a gear for driving saidseed shaft, and a frictionally-mounted device adapted to be heldyieldingly in inoperative position while said gear is driving said seedshaft in its normal direction but adapted when the gear is given aslight rotary movement in the reverse direction to be moved by frictioninto engagement with said gear for preventing further reverse rotationthereof.

15. A seeding mechanism comprising a seed shaft, means for driving saidseed shaft, a device frictionally mounted upon a rotary part of saiddriving means, a stop for limiting the rotary movement of said device inone direction, and means carried by said device adapted to preventreverse rotation of said rotary part when moved by adapted to be bronghtinto position by frictional engagement therewith slightly slightmovement of in reve se out of Contact with said stop. direction forengaging the other of said 16. A seeding mechanism comprising a gearsfor preventing reverse rotation there- 5 seed shaft, a pair ofintermeshing gears for of.

driving said seed shaft, and a device frictionally mounted on one ofsaid gears WILLARD A. VAN BRUN T.

